Facts About Chromium and Polonium
Interesting Facts
- Chromium is highly reactive, hence it is not found free in nature.
- Ores of Chromites mineral are the major source of Chromium metal.
- Almost 90% leather tanning is done with the help of chromium.
  
- Polonium was the first radioactive element to be discovered.
- Polonium element and its compounds are highly radioactive.
- Its alloy with Beryllium provides source of neutrons.
  
Sources
Found in Minerals, Mining, Ores of metals, Ores of Minerals
  
Mining, Ores of metals
  
History
  
  
Who Discovered
Louis Nicolas Vauquelin
  
Pierre Curie and Marie Curie
  
Discovery
In Between 1797 - 1798
  
In 1898
  
Abundance
  
  
Abundance In Universe
1.5 * 10
-3 %
  
7
Not Available
  
Abundance In Sun
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Humans
Not Available